ELECTRONIC FUEL METERING APPARATUS FOR INTERNAL COMBUSTION ENGINE

• US 3,831,563 A
• Filed: 11/03/1972
• Issued: 08/27/1974
• Est. Priority Date: 02/03/1972
• Status: Expired due to Term

• Current Assignee: Raymond Mitchell, Thomas J. L. Dobedoe, Wilfred T. Oliver, William J. Brittain
• Original Assignee: Raymond Mitchell, Thomas J. L. Dobedoe, Wilfred T. Oliver, William J. Brittain
• Inventors: Brittain, William J., Dobedoe, Thomas J. L., Mitchell, Raymond, Oliver, Wilfred T.
• Primary Examiner(s): Goodridge, Laurence M.
• Application Number:
  US05/303,661
• Time in Patent Office: 662 Days
• Field of Search: 123/139E,139AW,14MC,119R,32EA
• US Class Current: 123/487
• CPC Class Codes: F02B 1/04 with fuel-air mixture admission into cylinder
• CPC Class Codes: F02D 41/32 of the low pressure type F02D41/3082 takes precedence

Abstract

Electronic fuel metering apparatus is described for use with an internal combustion engine having an air inlet passage for supplying air to one or more combustion chambers. The apparatus includes an electrically controlled fuel metering device, a circuit for accumulating a count of air entering the combustion chamber (s), and a circuit for controlling, in accordance with the air count, the amount of fuel discharged by the fuel metering device. An up/down counter may be employed, and the rate at which fuel is discharged may be varied depending upon the air count accumulated on the up/down counter.

Claims

1. Electronic fuel metering apparatus for an internal combustion engine having an air inlet passage for supplying air to at least one combustion chamber in said engine, said apparatus comprising:

an electronically controlled fuel metering device;

first circuit means for accumulating a count of air entering said engine combustion chamber;

second circuit means, connected to said electrically controlled fuel metering device, for controlling the amount of fuel metered therefrom in accordance with the air count accumulated on said first circuit means;

said first and second circuit means being interconnected and including means for reducing said accumulated air count by an amount determined by the amount of fuel metered by said fuel metering device, said first and second circuit means further including means for varying the rate at which fuel is discharged from said fuel metering device, said rate being reduced in steps as said air count is reduced by said means for reducing said accumulated air count.